familyPoaceae
subfamilyPoaceae subfam. Pooideae
tribePoaceae tribe Poeae
genusArctagrostis
speciesArctagrostis latifolia
subspeciesArctagrostis latifolia subsp. arundinacea

Arctagrostis latifolia subsp. arundinacea

(Trin.) Tzvelev
Susan G. Aiken
Common names: Reed polargrass
Synonyms: Arctagrostis poaeoides Arctagrostis arundinacea Arctagrostis angustifolia
Treatment appears in FNA Volume 24. Treatment on page 678.
Please click on the illustration for a higher resolution version.
Illustrator: Linda Ann Vorobik

Copyright: Utah State University

Culms (24) 50-150 cm; uppermost nodes usually towards the middle of the culm. Uppermost sheaths shorter than the blades; blades 4-36 cm long, 2.4-15 mm wide. Panicles (4) 10-35 (44) cm long, 0.7-10 (14+) cm wide; longest branches (1.4) 3-27 cm, with (5) 50-140 spikelets per branch; secondary branches usually spreading. Spikelets 3-5.2 mm. Glumes unequal; lower glumes 2.3-3.6 mm, 1 (2) -veined; upper glumes 3-4.8 mm, shorter than to longer than the lemmas, 3-veined; lemmas 2.4-4.8 mm; anthers 1.3-3.5 mm. 2n = 28, 42.

Discussion

Arctagrostis latifolia subsp. arundinacea is the predominant subspecies from Alaska east to the western Northwest Territories, northern British Columbia, and Alberta. Cultivars for hay and revegetation mixes have been developed.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Arctagrostis latifolia subsp. arundinacea"
RDF feed
2n chromosome quantity
42 +  and 28 +
Abaxial ligule presence
absent +
Abaxial ligule quantity
common +
Adaxial cell presence
absent +
Adaxial cell shape
bulliform +
Adaxial ligule architecture or pubescence or shape
ciliate +
Adaxial ligule presence
absent +
Adaxial ligule texture
membranous +  and scarious +
Anther quantity
3 +
Anther some measurement
0.13 cm1.3 mm <br />0.0013 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
Apex shape
mucronate +, obtuse +  and acute +
Arm cell presence
absent +
Auricle presence
absent +
Author
Susan G. Aiken +
Authority
(Trin.) Tzvelev +
Awn atypical quantity
1 (?) +  and 3 (?) +
Awn course
straight +
Awn orientation
arising +
Awn position
basal +  and terminal +
Awn quantity
single +
Awn shape
bent +
Back shape
keeled +  and rounded +
Basal floret quantity
1 +  and 2 +
Base architecture
pseudopetiolate +  and branching +
Base arrangement
close +
Base fusion
free +
Base position
intravaginal +, extravaginal +, branching +  and basal +
Base size
swelling +
Base texture
hard +
Base width
thick +
Blade arrangement
parallel +
Blade arrangement or course or shape
linear +
Blade length
4 cm40 mm <br />0.04 m <br /> (36 cm360 mm <br />0.36 m <br />) +
Blade prominence
not evident +
Blade prominence or shape
flat +
Blade pubescence
glabrous +
Blade pubescence or relief
scabrous +
Blade shape
cross +, linear +  and narrowly lanceolate +
Blade width
0.24 cm2.4 mm <br />0.0024 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Branch relief
scabridulous +
Branch shape
spikelike +
Branch some measurement
0.5 cm5 mm <br />0.005 m <br /> (14 cm140 mm <br />0.14 m <br />) +
Callus development
developed +
Callus pubescence
glabrous +
Common name
Reed polargrass +
Culm architecture
not branching +
Culm architecture or arrangement or growth form
solitary +
Culm atypical some measurement
24 +
Culm duration
annual +
Culm growth form
climbing +
Culm growth form or location
floating +
Culm height
10 cm100 mm <br />0.1 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
Culm orientation
erect +
Culm pubescence
glabrous +
Culm some measurement
50 cm500 mm <br />0.5 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
Culm texture
not woody +
Culm thickness
0.12 cm1.2 mm <br />0.0012 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Distal floret size
reduced +
Distribution
Alta. +, B.C. +, Greenland +, Nfld. and Labr. (Nfld.) +, Man. +, N.W.T. +, Nunavut +, Ont. +, Que. +, Yukon +  and Alaska +
Embryo quantity
1/4 +  and 1/3 +
Endosperm texture
liquid +, soft +  and hard +
Filament shape
capillary +
Floret architecture
well-formed +
Floret arrangement
adjacent +
Floret length or size
sometimes longer +
Floret position or shape
distal +
Floret prominence
vestigial +
Floret quantity
single +, 2 +  and 1 +
Floret reproduction
sterile +  and bisexual +
Floret shape
compressed +
Floret size
reduced +
Glume architecture or shape
awned +
Glume height or length or size
usually shorter +
Glume length or size
shorter or longer +
Glume position
subtending +
Glume presence
absent +
Glume quantity
2 +
Glume size
unequal +
Glume variability
equal +
Hair shape
uncinate +
Hilum arrangement or course or shape
linear +
Hilum coloration or relief
punctate +
Hilum quantity
1/4 +  and 1/3 +
Hilum shape
Ovate (?) +
Illustration
Present +
Illustration copyright
Utah State University +
Illustrator
Linda Ann Vorobik +
Inflorescence architecture
open +
Inflorescence condition or size
contracted +
Inflorescence position or structure subtype
terminal +
Inflorescence size or width
narrow +
Internode architecture
hollow +
Internode presence
absent +
Lateral-vein prominence
obscure +
Layer presence
absent +
Leaf arrangement
distichous +
Leaf margin arrangement
Overlapping (?) +
Lemma architecture
3-5-veined +
Lemma architecture or shape
awned +
Lemma height or length or size
shorter +
Lemma length or size
longer +
Lemma pubescence
puberulent +  and scabrous +
Lemma shape
lanceolate +  and ovate +
Lemma some measurement
0.24 cm2.4 mm <br />0.0024 m <br /> (0.48 cm4.8 mm <br />0.0048 m <br />) +
Lemma variability
equaling +
Ligule architecture or relief
erose +
Ligule atypical some measurement
15 +
Ligule presence
absent +
Ligule shape
lacerate +  and obtuse +
Ligule some measurement
0.2 cm2 mm <br />0.002 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Ligule texture
membranous +
Lodicule architecture
veined +
Lodicule architecture or pubescence or shape
ciliate +
Lodicule architecture or shape
truncate +
Lodicule prominence
inconspicuous +
Lodicule pubescence
glabrous +
Lodicule quantity
2 +
Lodicule shape
lanceolate +
Lodicule texture
membranous +
Longest branch some measurement
3 cm30 mm <br />0.03 m <br /> (27 cm270 mm <br />0.27 m <br />) +
Lower glume architecture
1(2)-veined +
Lower glume some measurement
0.23 cm2.3 mm <br />0.0023 m <br /> (0.36 cm3.6 mm <br />0.0036 m <br />) +
Midrib architecture
simple +
Node prominence
concealed +  and prominent +
Number of lower taxa
0 +
Other quantity
2 +  and 1 +
Ovary presence
absent +
Ovary pubescence
glabrous +
Palea architecture or shape
folded +
Palea development
well-developed +
Palea presence
absent +
Palea shape
2-keeled +
Palea size
minute +
Panicle density
diffuse +
Panicle length
10cm +  and 35cm +
Panicle orientation
stiffly erect +  and spreading +
Panicle shape
spikelike +
Panicle size
reduced +
Panicle size or width
narrow +
Panicle width
0.7 cm7 mm <br />0.007 m <br /> (10 cm100 mm <br />0.1 m <br />) +
Papilla presence
absent +
Pericarp arrangement
separating +
Pericarp condition or texture
dry +
Pericarp texture
dry +  and fleshy +
Pericarp width
thin +
Pseudopetiole development
not developed +
Pseudopetiole presence
absent +
Rachilla length
prolonged +
Rachilla pubescence
scabrous +  and hairy +
Rachis prominence
evident +
Reference
None +
Secondary branch orientation
spreading +
Sheath architecture
open +
Sheath condition
closed +
Sheath length
closed +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V24/V24 956.xml +
Spike architecture
ebracteate +
Spikelet architecture
pedicellate +
Spikelet arrangement
mixed +
Spikelet atypical quantity
5 (?) +
Spikelet fixation
attached +
Spikelet quantity
50 +  and 140 +
Spikelet reproduction
viviparous +
Spikelet shape
compressed +
Spikelet some measurement
0.3 cm3 mm <br />0.003 m <br /> (0.52 cm5.2 mm <br />0.0052 m <br />) +
Stamen quantity
1 +  and 3 +
Starch-grain architecture
simple +  and compound +
Style-branch atypical quantity
4 +  and 1 +
Style-branch quantity
2 (?) +  and 3 (?) +
Style quantity
2 +
Subsidiary-cell architecture
parallel-sided +
Synonyms
Arctagrostis poaeoides +, Arctagrostis arundinacea +  and Arctagrostis angustifolia +
Taxon family
Poaceae +
Taxon name
Arctagrostis latifolia subsp. arundinacea +
Taxon parent
Arctagrostis latifolia +
Taxon rank
subspecies +
Terminal floret reproduction
sexual +
Tissue coloration
hyaline +
Tissue texture
membranous +
Upper glume architecture
3-veined +
Upper glume height or length or size
shorter +
Upper glume pubescence
glabrous +
Upper glume relief
scabridulous +
Upper glume shape
acute +  and obtuse +
Upper glume some measurement
0.3 cm3 mm <br />0.003 m <br /> (0.48 cm4.8 mm <br />0.0048 m <br />) +
Vein arrangement
parallel +  and converging +
Vein presence
absent +
Vein prominence
faint +  and prominent +
Vein quantity
1 (?) +
Vein size
major +
Volume
Volume 24 +
Whole organism architecture
rhizomatous +
Whole organism arrangement or pubescence
tufted +
Whole organism duration
perennial +
Whole organism growth form
plant +
Whole organism growth form or habitat
aquatic +  and terrestrial +
X chromosome quantity
7 +